Hello,
Here is a small script that will convert any steamid to authid.
I am not sure if anybody would find this useful. But it is useful to me. For example, when people register on my forums and I can't find them by their name in the webpanel to award credits for registration. I'll use this to derive their auth id from the steamid that they registered with.
STEAMid2AUTHid converter
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